Reply to Derp
If you don't have an account, just leave the password field blank.
If you get caught without a train ticket, or have to pay any on-the-spot fine (for anything other than driving) give them a fake name and address. Tell them you don't have a drivers license or anything else like that with you to identify you.
Then go home and alter your appearance so they don't catch you again.
Then go home and alter your appearance so they don't catch you again.